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Unit 4 - Newton's Law Flashcards | StudBud
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Unit 4 - Newton's Law
Unit 4 - Newton's Law
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Quiz on Newton's Laws and forces #physics #newtonslaws
Flashcards
29 cards
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Questions
29
Answers
1
The magnitude of the gravitational force acting on an object is
Weight
Frictional Force
Equal to its mass.
Inertia
2
Force applied to an object by another object or person
Normal
Spring
Tension
Applied
3
A force is described as _________ or _________ that acts on an object.
push or pull
gravity or friction
4
1 object exerts a force on a second object, the second object exerts a force on the first
opposite in direction & equal in magnitude at the same time.
opposite in direction & greater in magnitude @the same time.
Magic! *jazz hands*
the opposite direction & equal in magnitude a moment later
5
Force equals mass times acceleration. F=m*a
Newton's 2nd
Newton's 3rd
Newton's 1st
6
Frictional force which acts on objects travelling through air.
Air Resistance
Normal
Kinetic Friction
Applied
7
If the mass of an object is decreased, its inertia
Increases
Decreases
Remains in motion
8
Rockets can be used to specifically illustrate action/reaction which is which Newton’s law?
3rd
Law of Gravitation
1st
2nd
9
The result of unbalanced forces
acceleration
constant velocity
rest
10
The sum of all forces acting upon an object is known as:
kinetic force
net force
gross force
static force
11
Force transmitted through a string, wire, rope, and or cable when objects are at both ends
Tension
Spring
Normal
Applied
12
Force that opposes motion between two surfaces
Force
Friction
Newton's 1st
13
Force created when a large object (like a planet) attracts another toward it.
Tension
Gravity
Normal
Applied
14
If the sum of all the forces acting on a moving object is zero, the object will
change the direction of its motion
continue moving with constant velocity
accelerate uniformly
slow down and stop
15
Diagram used to visualize the magnitude and direction of all forces acting upon an object.
Motion
Venn
Picture
Free Body
16
Name the two types of friction
applied & normal
hot & cool
angular & momentum
static & kinetic
17
Which object has the greatest inertia?
a 15-kg object moving at a speed of 1.0m/s
a 5.0-kg object moving at a speed of 5.0m/s
a 10.-kg object moving at a speed of 3.0m/s
a 20.-kg object at rest
18
For every action, there is an equal and opposite reaction
Newtons 3rd Law
Newtons 1st Law
Newtons 2nd Law
19
Action & reaction forces do not cancel each other because...
Because
One is less than the other
They act on different systems.
The action force happens first
20
Calculate the mass of an object moving with a 20N force and an acceleration of 5m/s
2
4kg
4N
100kg
100N
21
Forces
only
exist as a result of an interaction.
False
True
22
An object persists in uniform motion in a straight line unless disturbed by an unbalanced force
Newton's 1st
Newton's 3rd
Newton's 2nd
23
When all the forces acting upon an object balance
Force
Unbalanced Force
Equilibrium
24
What causes an acceleration?
Velocity
Acceleration
Net Force
Equilibrium
25
What external force causes a vehicle's forward motion?
Tires
Friction
Gravity
Solar
26
What is the correct reaction force: A monkey's southward force on a banana.
The banana's southward force on the monkey.
The banana's eastward force on the monkey.
The banana's northward force on the monkey.
Literally unknowable.
27
Force exerted by a surface as an object moves across it.
Air Resistance
Applied
Sliding Friction
Normal
28
The resistance an object to a change in its state of motion.
Newton's 3rd
Inertia
Friction
29
Which situation describes an object that is in equilibrium?
a satellite orbiting Earth
a laboratory cart moving down a friction less 30.°incline
a hockey puck moving at constant velocity across ice
an apple in free fall